To compare the predictability of intraocular lens (IOL) power calculation using several corneal power measurements in eyes underwent phototherapeutic keratectomy (PTK).

Basic objectives2

Efficacy

Basic objectives -Others

Trial characteristics_1

Trial characteristics_2

Developmental phase

Assessment

Primary outcomes

IOL power calculations were performed by the SRK/T formula using Total Corneal Refractive Power

Key secondary outcomes

Automated keratometry, Simulated keratometry, True Net Power

Base

Study type

Observational

Study design

Basic design

Randomization

Randomization unit

Blinding

Control

Stratification

Dynamic allocation

Institution consideration

Blocking

Concealment

Intervention

No. of arms

Purpose of intervention

Type of intervention

Interventions/Control_1

Interventions/Control_2

Interventions/Control_3

Interventions/Control_4

Interventions/Control_5

Interventions/Control_6

Interventions/Control_7

Interventions/Control_8

Interventions/Control_9

Interventions/Control_10

Eligibility

Age-lower limit

65

years-old

<=

Age-upper limit

88

years-old

>=

Gender

Male and Female

Key inclusion criteria

total of 42 eyes of 25 consecutive patients

Key exclusion criteria

Eyes with postoperative best spectacle-corrected visual acuity (BCVA) of >0.25 logMAR, and eyes with any history of ocular surgery, ocular trauma, or other concomitant eye diseases, were excluded from the study.